TM 5-5420-228-24
STE/ICE Test Procedures - Continued
FROM STEP 4
14
Check scissors dual counterbalance valve for
pressure setting between 3350 to 3450 psi.
First Technician (Operator's Station)
Start engine.
Move ball valve to "LAUNCH" position.
Set engine speed at 1800 rpm.
If performing DETAILED
TROUBLESHOOTING PROCEDURE
Symptom-3.1, raise scissor cylinder control
lever.
If performing DETAILED
TROUBLESHOOTING PROCEDURE
Symptom-6.1, depress scissor cylinder control
lever.
Press and hold TEST BUTTON until readout
displays "CAL", then release button.
Release scissor cylinder control lever.
Check if pressure indication on VTM display is
between 3350 to 3450 psi.
Does VTM display indicate between 3350 to 3450
psi?
15
If performing DETAILED
TROUBLESHOOTING
PROCEDURE Symptom-3.1,
Replace overhead dual
counterbalance valve (page
If performing DETAILED
TROUBLESHOOTING
16
PROCEDURE Symptom-6.1,
Replace cartridge (C1) in
Replace scissors dual
scissors dual counterbalance
counterbalance valve (page
valve (page 3-204.64).
YES
NO
2-58.6
Change 3